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Publication numberUS3233588 A
Publication typeGrant
Publication dateFeb 8, 1966
Filing dateJun 9, 1964
Priority dateJun 9, 1964
Publication numberUS 3233588 A, US 3233588A, US-A-3233588, US3233588 A, US3233588A
InventorsThomas Charles E
Original AssigneeThomas Charles E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Excrement disposal device for indoor use
US 3233588 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


5 Attorneys 2 Sheets-Sheet 1 C. E. THOMAS Feb. 8, 1966 EXCREMENT DISPOSAL DEVICE FOR INDOOR USE Filed June 9. 1964 Feb. 8, M966 c. E. THOMAS 3,233,588

EXCREMENT DISPOSAL DEVICE FOR INDOOR USE Filed June 9, 1964 2 Sheets-Sheet 2 Fig 3 www \ Char/es E. Thomas /8 Ik! ll M8 INVENTOR. /4 l United States Patent Gliice 3,233,588 EXCREMENT DISPOSAL DEVICE FUR INDOGR USE Charles E. Thomas, Oklahoma City, Okla. (Box 93, Montrose, Colo.)

Filed .lune 9, 1964, Ser. No. 373,8I1 4 Claims. (Cl. 119-1) The present invention relates to a portable manually usable device which is functionally designed and structurally adapted for effectually collecting and thereafter handling and conveniently disposing of animal excrement and has to do with a device which is such in construction and use that it well serves the purposes for which it is intended.

More speciically the invention pertains to a sanitarytype household sand box characterized by a novel construction and arrangement of simple coacting pans and a readily insertable and removable sieve-like sand sifting pan dividing screen.

Indoor-type sand boxes for pets, cats, for exmple, are old and well known. As a matter of fact, special type sand boxes have been devised wherein the coacting component parts are such in construction that means is provided to cope with the perplexing problem of handling and acceptably disposing of foul-smelling excrement and the attending stench unless it has been eiiicaciously taken care of. A typical example of a generally Ianalogous prior art adaptation is Patent 2,971,493 of Feb. 14, 1961, granted to Robb and pertaining to a sanitary sand box for cats. Reference to the stated patent will enable the reader to quickly ascertain the background and state of the art and will serve to make it apparent that it is an objective in the instant presentation to structurally, functionally and in other ways improve upon the Robb patent and any other similarly constructed and performing pet commodes and, in so doing, to provide an innovation which achieves the improved result desired.

Briefly, the invention herein disclosed comprises three simple units; namely, two telescopically and separably connectible rectangular pans preferably constructed of lightweight galvanized sheet metal, and a readily insertable -and removable divider or partitioning unit which constitutes an innovation in that it provides not only a sieve-like sand sifting and transferring screen but a collector for trapping and handling the disposable excrement.

To the ends desired the two pans are similarly constructed, there being a first pan which serves initially and normally as a temporary container for the sand desired. A second pan is complemental to and provides a cornpanion cover for the receptacle portion of the first panel. The latter pan has an upstanding rim provided with a turned in horizontal liange which constitutes a ledge. When the pan dividing and separator screen is brought into use the marginal frame is supported by the flange whereby the latter constitutes a ledge therefor.

Particular novelty is predicated on providing the frame of the screen or separator with adapter means. This means preferably comprises a pair of simple elongated brackets, each bracket having a channel-shaped portion which functions as a hook. The two hooks are disposed exteriorly of the rim of the first pan and serve to seat and support the walls of the rim of the second or cover pan.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

3,233,588 Patented Feb. 8, 1966 FIGURE l is a view in perspective of an excrement handling and disposal device for indoor use constructed 1n accordance with the present invention and showing the two pans in their ready-to-use position and, in addition, showing the animal using the sand in the then existing bottom7 pan, the divider having been temporarily stored for readiness of use;

FIGURE 2 is a View which ties in with FIGURE 1 but is on a larger scale and appears in section and serves to show the excrement embedded in the sand, with the two pans in coacting relationship and the divider spanning the alinged receptacle portions thereof;

FIGURE 3 is a View based on FIGURE 2 and wherein the tow interconnected or telescoping pans have been temporarily bracketed together and inverted or turned upside down in order to effect not only the transfer of sand by sifting from one pan to the other but the collection of the ready-to-dispose of excrement; and

FIGURE 4 is a view in perspective similar, in a manner of speaking, to FIGURE l but showing the pans in reverse order and showing, what is more important, `the removal of the separator or screen from the second pari and readied to be disposed of.

Reference will be made first to FIGS. l and 2 wherein the numeral 6 designates a iirst closed-bottom open top rectangular galvanized sheet-metal or an equivalent metal pan which is approximately 14 inches by 14 inches and approximately 3 inches in depth. This pan has a` fiat bottom wall as shown at 8 in FIG. 2 and upstanding encompassing vertical walls 10 which conjointly provide the aforementioned rim. The upper edges of the walls 10 are provided with turned-in iianges which constitute lips I2 and these flanges conjointly provide not only a re inforcing member but an appropriate ledge which serves the purpose shown in FIG. 2. The companion or complemental second open-bottom, closed top pan is de-` noted by the numeral 14 and comprises a llat main wall 16 with lateral cooperating walls 18 which conjointly d`etine a marginal rim and a receptacle portion.

The receptacle portion is slightly deeper than the receptacle portion of the first pan 6. The size of the pan 14 is slightly larger than the first pan to allow one to nest inside the other one and to permit the second pan to serve as a lid-like cover for the first pan (FIG. 2).

Taking up now the third component or unit, this is a structurally distinct part and as a matter of fact is thought to be an innovation in this field of endeavor. It is identifiable either as a divider or separator and is denoted, as an entity, by the numeral 20. It comprises a substantially rigid rectangular sand shifting excrement supporting screen 22 of suitable material and mesh. The marginal edges are firmly bound in a suitable binder or frame 24 embodying diametrically opposite component portions 28, these portions 26 and 28 being separately designated for the reason that the diametrically opposite pair of adapters 30 are mounted on the frame portions 28 as distinguished from the portions or members 26. The adapters are elongated and are made from non-corrodible sheet material and each adapter has an elongated fiange 32 which is superimposed upon the cooperating frame member 28 and fixedly joined thereto in any practical manner. The main sheet portion is bent upon itself as shown at 34 to define an elongated open-ended readily applicable and adaptable channel having an .inward wall 36 and an outward wall 38 which is narrower than the wall 36. These two walls cooperate in defining a hooklike pan assembling and retaining hook.

Because of the fact that the first and second pans 6 and 14 are similar in construction and have to be inverted or turned upside down in order to attain the end result desired they have been differentiated as a rst pian 6 and a second pan 14. On the other hand and despite the fact that the terms are used advisedly one may refer to the pan 6 in FIGS. 1 and 2 as the bottom pan and the pan 14 as the top or cover pan. ln any event, and in the manner of use shown in FIGS. 1 and 2, the separator or divider 20 has been positioned so that the frame rests on the ledge 12 prior to joining the top or cover pan 14 with the underlying bottom pan 6. Of course, in the first step illustrated in FlG. l the separator Z0 cian be stored temporarily in the lid or cover and when the result desired is initiated the components are assembled as illustrated in FlG. 2. Here the screen separates the receptacle portions of the two paris. Also, the adapter brackets or adapters 30 are `such thlat the channel members are disposed outwardly of the walls of the rim of the pan 6 whereby the channels constitute keepers and seat the lower edge portions of the rim walls 18 of the cover pan 14.

vNow the device can be turned .upside down or inverted as illustrated in FIG. 3 in order that the sand can be sifted from one receptacle portion into the other :and whereby to thus transfer or trap the excrement or components thereof on the screen in the manner shown in FIG. 4. Consequently by removing the pan 6 which has temporarily become the cover the screen is uncovered and can be lifted off and the media thereon can be readily disposed of in the manner desired. The separator or divider is usually made of one-quarter inch hardware cloth Vmounted on all four edges with three-quarter inch galvanized metal folded and edged.

This invention obviates the necessity of resorting to the customary old fashioned procedure or practice of sorting out and scooping up refuse from litter material in the care and tending of pets, for example, oats. The invention is completely portable and the component parts are properly proportioned and cooperate to achieve the improved results desired.

In practice the galvanized metal pan (the lower pan for example) can land often will be made of a suitable plastic material. Alternatively, the interior of the pan, if made of galvanized metal, may be plastic-coated to resist the damaging affects of acid. Then, too, the entire structure can be made of colorful commercial plastics. Further, the flange 12 can be acceptably omitted when marketing a small-sized adaptation.

v It is believed that a careful consideration of the specification in conjunction with the invention as claimed will enable the reader to obtain a clear and comprehensive understanding of the subject matter of the invention, the features and advantages and the manner of adopting and using the same for satisfactory results. Accordingly, a more extended description is regarded as unnecessary.

The foregoing is considered a-s illustrative only of the principles of the invention. Further, `since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

l1. A portable excrement collecting sand box for pets,

cats for example, comprising: a first closed-bottom opentop sand containing and confining pan, a second openbottom closed-top pan complemental to said first pan, both pans having coordinating marginal rims, the rim of the first pan fitting telescopingly within the confines of the rim of the second pan, :and a bodily applicable and removable divider embodying a sieve-like sand sifting screen spanning the open top of said first pan and embodying a marginal frame provided with adapters, said adapters functioning to orient the rims of both pans and also serving to position and retain the pans and screen in assembled relationship and to facilitate the necessary step of reversing and turning the pans upside down so that the sand can then be transferred by gravity from the receptacle portion of the first pan to the receptacle portion of the second pan whereby the feces is trapped and retained on said screen for convenient disposition.

2. The invention according to claim 1, and wherein said adapters comprise a pair of diametrically opposite brackets, each bracket embodying a channel-shaped member constituting and providing a hook which is releasably hooked over the edge of a rirn portion of said first pan.

3. The invention according to claim 1 and wherein each adapter comprises an elongated bracket being fixedly mounted on said frame and having an elongated channel-shaped member constituting a hook-like keeper and being releasably hooked over the edge of `a rim portion of said first pan.

4. For use by a pet, a cat for example, a portable indoors sand box for collecting, handling and disposing of animal excrement with requisite nicety comprising: a first open top pan having `a bottom and an encompassing upstanding rim, said rim embodying coacting walls, the upper edges thereof being turned horizontally and inwardly toward each other and providing a supporting ledge, a manually applicable sand sifting and excrement separating screen spanning `said open top and provided with a marginal frame removably seated atop said ledge, said frame being provided :at rdiametrically oppositely disposed points with a pair of adapter brackets, said brackets being in turn provided with exteriorly disposed open-ended channel-shaped members constituting screen orienting, retaining, and pan assembling keepers, and a second pan having `a closed top and open bottomiand a depending rim fitting telescopically over the upper marginal portion of the rim of said first pan and having lower edge portions removably seated and temporarily retained in their respectively cooperable keepers.

References Cited by the Examiner UNITED STATES PATENTS 789,517 5/1905 Williamson 209-251 2,713,321 7/1955 Keen 119-1 2,963,003 12/1960 Oberg et al 1l9-l 3,039,601 6/1962 Martin 220-47 SAMUEL KOREN, Primary Examiner.


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US789517 *Jan 4, 1905May 9, 1905Reason C WilliamsonFlour-sifter.
US2713321 *Feb 3, 1953Jul 19, 1955Keen Richard CSelf-sifting dust bath pan
US2963003 *Feb 11, 1958Dec 6, 1960Louise Henley CharlotteIndoor pet sand box
US3039601 *Apr 29, 1960Jun 19, 1962Sonoco Products CoMulti-container package
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3377990 *May 23, 1966Apr 16, 1968Carleen B. MitchellDisposable package and sanitary station for animals
US3482546 *Sep 1, 1967Dec 9, 1969Anderson Elden JSanitary litter box for pets
US3745975 *Sep 21, 1971Jul 17, 1973Prucha SDisposable pet relief structure
US3827401 *Oct 16, 1972Aug 6, 1974Franzl GSanitary receptacle for pets
US4096827 *Jan 11, 1977Jun 27, 1978Cotter James ASelf-cleaning cat waste disposal device
US4117804 *Apr 15, 1977Oct 3, 1978Ivan PopeSelf-deodorizing litter box
US4217857 *Apr 24, 1978Aug 19, 1980M.H.G., Inc.Pet relief station
US4299190 *Jan 28, 1980Nov 10, 1981Andrew RhodesLitter box
US4325822 *Jul 25, 1980Apr 20, 1982Miller John HPet litter separator
US4706606 *Oct 29, 1986Nov 17, 1987Claude CoppolaHygienic assembly for use by cats
US4784082 *Nov 20, 1986Nov 15, 1988Steven WolfeDisposable litter box system
US4869204 *Jun 4, 1986Sep 26, 1989Patrick YanantonOdorless animal litter unit having securing means
US4870924 *Sep 14, 1988Oct 3, 1989Wolfe Steven MDisposable litter box system
US4972800 *Jan 3, 1990Nov 27, 1990Bennett Earl WPet litter box
US5012765 *Apr 30, 1990May 7, 1991Cielo Industries, Inc.Cat litter screening device
US5167204 *Nov 12, 1991Dec 1, 1992Nussle Ron LLitter box
US5207772 *Mar 23, 1992May 4, 1993Lauretta John JLiter box liner and filtration system and method
US5388550 *Jun 7, 1993Feb 14, 1995Noble; Shannon R.Sanitary facility for animals
US5392733 *Feb 28, 1994Feb 28, 1995Kabushiki Kaisha Tominaga Jyushi KogyoshoBox-shaped toilet for pet animals
US5402751 *Mar 22, 1994Apr 4, 1995De La Chevrotiere; Jean-FrancoisPet litter box
US5410987 *Feb 22, 1994May 2, 1995Simmons; Harlan M.Animal waste disposal apparatus
US5482007 *Mar 31, 1994Jan 9, 1996Kumlin; Robert R.Disposable pet toilet assembly
US5582134 *Apr 28, 1995Dec 10, 1996Simmons; Harlan M.Animal waste disposal apparatus having rotatable sieve and method
US5630377 *Sep 25, 1995May 20, 1997Kumlin; Robert R.Disposable pet toilet assembly
US6079363 *Apr 20, 1999Jun 27, 2000Maclaine; JoannePortable canine waste station
US6295949May 2, 2000Oct 2, 2001Steven B. WillisLitter box
US7677201 *Nov 9, 2006Mar 16, 2010Ralph EdenDisposable sanitary shield for kitty litter containers
US9198397 *Jun 29, 2011Dec 1, 2015Sanidome Canin SarlCombined domestic toilets for dogs
US9210911 *Aug 29, 2012Dec 15, 2015Spartel EngineeringToilet equipment for domestic animals, in particular for dogs
US20080178817 *May 29, 2004Jul 31, 2008Marsha Beth BrewerAnimal flush toilet and assembly system
US20130036982 *Jul 23, 2012Feb 14, 2013Scott David BartholdsonFlip n Go
US20130160715 *Jun 29, 2011Jun 27, 2013Sanidome Canin SarlCombined domestic toilets for dogs
US20140174369 *Aug 29, 2012Jun 26, 2014Spartel EngineeringToilet equipment for domestic animals, in particular for dogs
US20150196004 *Jul 29, 2014Jul 16, 2015Zachary NormanPet Waste System
U.S. Classification119/166
International ClassificationA01K1/01
Cooperative ClassificationA01K1/0114
European ClassificationA01K1/01B2